Nearly every man over the age of 45 has some enlargement of the prostate gland, the small male sex gland that encircles the urethra. Enlargement and inflammation of the prostate can hinder urine flow and affect sexual function. BPH (benign prostatic hyperplasia) results in frequent nighttime urination, pain, burning and difficulty with urination. The berries of the saw palmetto plant help to relieve the urologic symptoms associated with benign prostatic hyperplasia.